1937 E. C. Kemble vi. 196 When we pass from the two-particle problem to the many-particle problem..we pass from a domain in which there is a well-developed basic mathematical theory to a domain of mathematical ignorance.
1955 F. L. Friedman & V. F. Weisskopf in W. Pauli 135 The states formed in the reaction are states of a many-particle system.
1993 43 31 The immensely complicated dynamics of many-particle systems.